發(fā)布時(shí)間：2018-05-06 20:12

  本文選題：DSP + 疲勞��； 參考：《大連理工大學(xué)》2014年碩士論文

【摘要】：近年來(lái),經(jīng)濟(jì)的迅速發(fā)展,使得公路和橋梁越來(lái)越多,而公路和橋梁的非正常使用,如施工不當(dāng)、車(chē)輛超重等等,也導(dǎo)致了一系列的問(wèn)題。通常情況下,超重車(chē)輛對(duì)公路和橋梁結(jié)構(gòu)的損傷比正常載重的車(chē)輛大得多,導(dǎo)致路橋結(jié)構(gòu)的過(guò)早疲勞。為了對(duì)損傷進(jìn)行實(shí)時(shí)預(yù)警并評(píng)估路橋結(jié)構(gòu)的安全性,許多公路和橋梁都安裝了結(jié)構(gòu)健康監(jiān)測(cè)系統(tǒng)。然而,由于當(dāng)前的結(jié)構(gòu)健康監(jiān)測(cè)系統(tǒng)的構(gòu)建復(fù)雜,且系統(tǒng)造價(jià)高、安裝不便利,使系統(tǒng)不適用于一般公路和橋梁的使用。基于此,本文設(shè)計(jì)了一種基于DSP (Digital Signal Processor)的小型化、安裝方便并且成本低廉的超重監(jiān)測(cè)與響應(yīng)系統(tǒng)。 本系統(tǒng)主要利用路橋表面鋪設(shè)的傳感器陣列所感應(yīng)的動(dòng)態(tài)實(shí)時(shí)信號(hào),來(lái)對(duì)當(dāng)前的結(jié)構(gòu)損傷加以分析,進(jìn)而評(píng)估道路和橋梁的承載能力和剩余疲勞壽命。系統(tǒng)主要由傳感器陣列、電荷放大模塊、DSP處理器、超重報(bào)警系統(tǒng)以及路橋結(jié)構(gòu)損傷評(píng)估五部分組成。傳感器陣列系統(tǒng)采用了地感線圈和交通傳感器相配合的布設(shè)方式,保證了系統(tǒng)可以在車(chē)流量較大時(shí)依然能準(zhǔn)確識(shí)別車(chē)牌信息、監(jiān)測(cè)車(chē)輛載重；傳感器陣列產(chǎn)生的信號(hào)經(jīng)過(guò)電荷放大器放大后送給DSP處理器,帶有內(nèi)置AD模塊的DSP把模擬信號(hào)轉(zhuǎn)化成數(shù)字信號(hào)并結(jié)合超重閾值判斷是否超重；若車(chē)輛超重,系統(tǒng)將對(duì)其進(jìn)行響應(yīng)處理,包括通過(guò)圖像采集進(jìn)行車(chē)牌識(shí)別、對(duì)違規(guī)超重車(chē)輛報(bào)警,同時(shí)數(shù)據(jù)中心采用嵌入式雨流計(jì)數(shù)法對(duì)超重?cái)?shù)據(jù)進(jìn)行處理,進(jìn)而實(shí)現(xiàn)對(duì)路橋結(jié)構(gòu)的疲勞分析和安全評(píng)估。 現(xiàn)場(chǎng)測(cè)試結(jié)果表明：在中速行駛中,車(chē)輛壓力監(jiān)測(cè)的誤差率在3.8%到8.7%之間,系統(tǒng)能夠準(zhǔn)確地實(shí)時(shí)監(jiān)測(cè)路橋上車(chē)輛的過(guò)載情況,通過(guò)報(bào)警抓拍模塊實(shí)現(xiàn)了對(duì)超重車(chē)輛的車(chē)牌號(hào)碼、車(chē)牌顏色和通過(guò)時(shí)間等信息的預(yù)警與記錄,并且基于超重?cái)?shù)據(jù)進(jìn)行穩(wěn)定的智能疲勞監(jiān)測(cè)。該系統(tǒng)具有小型化、嵌入式結(jié)構(gòu)、實(shí)時(shí)響應(yīng)等特點(diǎn),非常適合常規(guī)路橋超載車(chē)輛的監(jiān)測(cè)與控制,具有很好的應(yīng)用前景。
[Abstract]:In recent years, with the rapid development of economy, more and more highways and bridges have been used, and the abnormal use of highways and bridges, such as improper construction, overweight vehicles and so on, has also led to a series of problems. Generally, the damage of overweight vehicles to highway and bridge structures is much greater than that of normal load vehicles, which leads to premature fatigue of road and bridge structures. In order to warn the damage in real time and evaluate the safety of highway and bridge, many highway and bridge are equipped with structural health monitoring system. However, the current structural health monitoring system is not suitable for the general highway and bridge because of its complex construction, high cost and convenient installation. Based on this, a miniaturization, easy installation and low cost overweight monitoring and response system based on DSP Digital Signal Processor is designed in this paper. In this system, the dynamic real-time signals induced by sensor array laid on the surface of the road and bridge are used to analyze the current structural damage, and then to evaluate the bearing capacity and residual fatigue life of the road and bridge. The system consists of sensor array, charge amplifier module and DSP processor, overweight alarm system and damage assessment of road and bridge structure. The sensor array system adopts the collocation mode of ground sensing coil and traffic sensor, which ensures that the system can recognize the license plate information accurately and monitor the vehicle load when the traffic flow is large. The signal generated by the sensor array is amplified by a charge amplifier and sent to the DSP processor. The DSP with a built-in AD module converts the analog signal into a digital signal and determines whether it is overweight or not combined with the overweight threshold; if the vehicle is overweight, The system will deal with its response, including license plate recognition through image collection, warning of illegal overweight vehicles, and the use of embedded rain flow counting method to process the overweight data in the data center. Then the fatigue analysis and safety evaluation of the bridge structure are realized. The field test results show that the error rate of vehicle pressure monitoring is between 3.8% and 8.7%. The system can accurately and real-time monitor the overload of vehicles on the road and bridge, and realize the license plate number of the overweight vehicle by alarm capture module. Warning and recording of license plate color and passing time, and intelligent fatigue monitoring based on overweight data. The system has the characteristics of miniaturization, embedded structure, real-time response and so on. It is very suitable for the monitoring and control of conventional overloaded road and bridge vehicles, and has a good application prospect.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U418;U446;TP274

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 楊永吉;鄧速;;隨機(jī)疲勞數(shù)據(jù)快速實(shí)時(shí)處理和壽命估算[J];北京農(nóng)業(yè)機(jī)械化學(xué)院學(xué)報(bào);1984年02期

2 席道瑛，，鄭永來(lái);PVDF壓電計(jì)在動(dòng)態(tài)應(yīng)力測(cè)量中的應(yīng)用[J];爆炸與沖擊;1995年02期

3 張龍;周端;司棟森;張建國(guó);;基于TMS320F2812高速數(shù)據(jù)采集系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn)[J];電光與控制;2007年01期

4 李紅,唐明新,袁愛(ài)進(jìn),喬毅;TMS320F2812定點(diǎn)DSP芯片的.cmd文件配置[J];儀器儀表用戶;2004年05期

5 李曉松;;動(dòng)態(tài)稱重技術(shù)的應(yīng)用[J];公路交通科技;1991年03期

6 雷曉瑜;曹廣忠;;TMS320F28335及其最小應(yīng)用系統(tǒng)設(shè)計(jì)[J];電子設(shè)計(jì)工程;2009年01期

7 譚威;羅仁澤;高文剛;周慧琪;;基于TMS320F28335的DSP最小系統(tǒng)設(shè)計(jì)[J];工業(yè)控制計(jì)算機(jī);2012年04期

8 袁熙;李舜酩;;疲勞壽命預(yù)測(cè)方法的研究現(xiàn)狀與發(fā)展[J];航空制造技術(shù);2005年12期

9 董樂(lè)義,羅俊,程禮;雨流計(jì)數(shù)法及其在程序中的具體實(shí)現(xiàn)[J];航空計(jì)測(cè)技術(shù);2004年03期

10 熊海貝;李志強(qiáng);;結(jié)構(gòu)健康監(jiān)測(cè)的研究現(xiàn)狀[J];結(jié)構(gòu)工程師;2006年05期

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